Benefit: Known as anti-opathalmic, Vitamin A is essential for growth and vitality. It builds up resistance to respiratory and other infections and works mainly on the eyes, lungs, stomach and intestines. It prevents eye diseases and plays a vital role in nourishing the skin and hair. It helps to prevent premature ageing and senility, increases life expectancy and extends youthfulness.

What happens if you body is Deficient with Vitamin A: A prolonged deficiency of vitamin A may result in inflammation of the eyes, poor vision frequent colds, night blindness and increased susceptibility to infections, lack of appetite and vigor, defective teeth and gums and skin disorders.

Source for Vitamin A: The main sources of this vitamin are:

* Fish liver oil,

* liver,

* whole milk,

* curds,

* pure ghee,

* butter,

* cheese,

* cream

* egg yolk,

* green leafy and certain yellow root vegetables such as spinach, lettuce, turnip, beets, carrot, cabbage and tomato and ripe fruits such as prunes, mangoes, papaya, apricots, peaches, almonds and other dry fruits.

Recommendation (if you take vitamin A tables or supplements): The recommended daily allowance of vitamin A is 5,000 international units for adults and 2,600 to 4,000 international units (IU) for children. When taken in large therapeutic doses, which are usually 25,000 to 50,000 units a day, it is highly beneficial in the treatment of head and chest colds, sinus trouble, influenza and other infectious diseases. It is also valuable in curing night blindness and other eye diseases as well as many stubborn skin disorders. This vitamin can be given upto 1, 00,000 units a day for a limited period of four weeks under doctor’s supervision.

Note: International Units (IU) is dependent on the potency of the substance, and each substance would have a different IU to milligram conversion. For example, 1000 IU of Vitamin C would have a different weight than 1000 IU of Vitamin A.

Most vitamins you buy from local pharmacy have IU defined on the label. However, your best bet would be to contact your pharmacist. They have good information anyone could ever want about drugs and vitamins.